UK definition: Black, Jamaican (Kingston) born gangstas found in rough parts of London. Associated with BMW's, gold jewellery, and automatic guns. Responsible for a lot of murders and other crimes (mostly drug related).

Jamaican definition: Anyone from your neighbourhood (not necessarily gangsters).
"Yardies have brought a horrific new level of violence to Britain" - Tony Thompson

"Yardies, in terms of a reputation for ruthless violence, could one day rival the Triads or Mafia". - BBC
by rich November 21, 2003
(NOUN)
pronuciation:(yard-dees)
1. People whoa re addicted to yardsales. They attend Yardies Annonomous.A.K.A:YA.

2. People who have sex in their front yards. Never the backyard always the front. They like the attention.

3. Kind of like furries yet they are people that get dressed as plant like creatures and masturbate in their front yards. Once angain never the backyards always the front. ( they masturbate because they think they're plants and plants are of coarse asexual so they masturbate.)
1. The yard sale addicts,yardies, signed up for YA today and had their first meeting.

2. The old couple, known as yardies, 'got off' by entertaining their street with sexual acts in their front yard.

3. People have always heard of 'furries' but now they have found a new kind of 'strange sex act' called yardies. These people, different from furries dress up and think they are plants, and masturbate in their front yards. Weird right??
by lacey king June 18, 2007
A raging party taking place in one's yard.
-Yo dude, I'm having a yardy tonight. Wanna join?
-Fersure, I yardy hardy.
by eab9 September 11, 2012
A person whom is a native of Jamaica or his/her of spring

mi come from yard.yuh ah yardie to?
by fada bashment April 30, 2007
Definition Yardy: The homies, great friends, the boys. (Slang from Jamaican from the word “Yardie”; meaning friend, group of friends).
“Tonight I’m kickin it with the Yardy”
“The Yardy be pullin’ up any minute
Yardy is another word for a Jamaican, specifically one from a difficult socio-economic area.

The term stems from the slang name given to occupants of government yards in Trenchtown, a neighborhood in West Kingston, Jamaica. Trenchtown was originally built as a housing project following devastation caused by Hurricane Charlie. Each development was built around a central courtyard with communal cooking facilities. Due to the poverty endemic in the neighborhood, crime and gang violence became rife, leading the occupants of Trenchtown to be in part stigmatized by the term "Yardie".
Smif-n-wessun Lyrics
" Hellucination "

tek (steele)

And a dead boy, and I don’t even know
he looks like the dred, that hooked us up on the low
What you say fly?

thinkin out loud, just caught me in the zone
I’ll tell you all about it on the way home
Whatever, i’mma send this nigga to his essence
Fuckin wit the family, know he gotta learn a lesson

And you know he ain’t yardy right
Some boy gon get dead tonight
As we strap on the gloves, feel the buzz from cannabis
Niggas bout to get scandalous

(arguing and gunshots)
by Jai Monee May 12, 2009
Eighties British slang for a gang consisting predominatly of Jamacians, or those of Jamacian descent. Usually yardies work in large groups and favour torture to anyone who says anything against them. Their downfall is their rash decisions, inability to handle the police democratically, and thier general disorganisation when compared to larger gangland groups. Yardies, though many, tend to share a distrust for anyone outside their own gang, and are often drawn into gunfights or knife battles. Charactorised by excessive jewellry, puffer-jackets, baseball caps and screeching accents.

Usually violent and easily lured into losing their monies through misadventure.
by Gumba Gumba March 1, 2004